Tech Armor via Amazon offers Prime members the Tech Armor Certified Braided 2-Foot Lightning Cable for $13.95. Coupon code "TECHCABL" cuts it to $11.16. With free shipping, that's $3 off and the lowest total price we could find. (Non-member can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.01.) This MFI-certified cable is compatible with iPhone models from the iPhone 5 onwards, and other recent Apple devices.
Also available is the Tech Armor Certified Braided 2-Foot Lightning Cable for $14.95 before the above coupon, $11.96 after. With free shipping for Prime members, that's the lowest total price we could find by $5, although we saw one for $7 less two weeks ago.